Reverting Window 3GB Switch HELP!!

[Little Brother]

I'm sorry for the bump but im getting nowhere trying to fix this problem.
Currently my PC spec is Dell Studio XPS 435T.Windows Vista™ Home Premium (32bit), Intel(R) Core i7 CPU with 4GIG RAM.
After reading some good forum here.
I did[bcdedit /set increaseuserva 3072], and I'm not having anymore crashes running higher graphic settings on my fave games.

Turns out I bought another 4GB RAM, so I got 8GB on my PC now.
Thing is, the [http://www.systemrequirementslab.com/cyri] "Can You Run It" website says I got only 3.5GB of Ram, and I think it's related to the above command line I used.
On my DXDIAG page, this is my result : [Memory: 3062MB RAM] & [Page File: 2757MB used, 3591MB available]

I did revert it by typing [BCDedit/deletevalue IncreaseUserVA]
But after restarting and DXDIAG, i'm still getting the same result.
It seems that it didnt recognize the rest of the 4GIG remaining RAM that i just installed, or am I missing something on this?

Any advice/tips/solution/reference on this?
Thanks in advance for all your reply & feedback.

[rotNdude]

You are running a 32-bit version of Windows and it will never be able to recognize over 4GB of RAM.

[banzaigtv]

The only way around this is to upgrade to Windows 7 or 8 64-bit. You will need a clean install because you are upgrading from 32-bit.

[Magnahlf]

Uppgrade to win7 64bit win 8 is like a destroyed win 7

[Little Brother]

ahh thanx a lot for all the reply.
Yes .. i think its about time to upgrade anyway .. lucky the window8 deal is still around.
Thanks again for the feedback guys. Really appreciate it